patch 8.2.0189: cd() with NULL argument crashes Commit: https://github.com/vim/vim/commit/7cc96923c44bbcc541cbd211b6308d87a965f0c3 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Jan 31 22:41:38 2020 +0100 patch 8.2.0189: cd() with NULL argument crashes Problem: cd() with NULL argument crashes. Solution: Check for NULL. (Ken Takata, closes https://github.com/vim/vim/issues/5558)

/* version.c */
void init_longVersion(void);
int highest_patch(void);
int has_patch(int n);
void ex_version(exarg_T *eap);
void list_in_columns(char_u **items, int size, int current);
void list_version(void);
void maybe_intro_message(void);
void intro_message(int colon);
void ex_intro(exarg_T *eap);
/* vim: set ft=c : */